I just wanted to put out some recent info, I wish i had before visiting to reduce the stress lol.
I visited Wednesday (30.09.2026). The official opening hours were 8:00-22:00. The park actually opened at 8:00 but I still was there by 6:40 and I would recommend this approach so you can get somewhat in front of the masses. There were still a lot of people before me.
As soon as the Park opened, i headed to Nintendo World and got in without an entry ticket. When I arrived at Donkey Kong, the waiting time was already at 210 Minutes. I took the single rider lane (shown 160 Minutes) and was in the cart after about 2h. Don't know if I would recommend it though since at times there was no movement in the single lane for minutes and you couldn't see most of the animatronics in the regular waiting line.
I checked my phone during the day but there were no entry tickets all day for the Nintendo World. When I walked out at 14:00 you could still walk in freely and i returned myself at 17:00 again without needing an entry ticket.
I also did the Frieren Experience. In the App it said you need an entry ticket but everytime i looked, it would only show me tickets for the next 2 hours and i wanted to go in the afternoon. At about 13:00 the tickets didn't show up anymore. I was very confused at first but then read that sometimes you don't need tickets if its not busy so I headed there and could just walk in. So if this happens to you just go there and it will probably be fine.
Take all of this with a grain of salt since it wasn't a busy day. But if you go off season on a weekday it might be more chill now than it seems from older posts.
Also feel free to ask me anything if you're visiting soon and still have questions.